Арх комп / IC100dLab09
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LAB PROCEDURE 9
CPU Upgrade/Overclocking
OBJECTIVES
1.Install a CPU.
2.Employ different clock frequencies.
RESOURCES
1. A PC
DISCUSSION
This lab will familiarize you with upgrading a CPU on a Socket370 motherboard. The process is fairly simple with today’s auto detecting motherboards. When you are upgrading a CPU you need to be concerned with CPU voltage, internal frequency and FSB (Front Side Bus). The internal frequency is determined by multiplying the system bus by a number to attain the internal frequency of the CPU. The frequency specifications are usually written on the box the processor came in or on the processor itself. You will physically remove a CPU and reinstall it as if it were a new processor. Your motherboard may have physical jumper settings for clock frequencies, or software controllable settings in the BIOS. Overclocking can be dangerous to your system and may cause system failures. It is recommended not to overclock above 20% the recommended frequencies. It is also important to have a good heat sink and fan on the processor.
Hardware
Hardware
PROCEDURE
1.Remove CPU
___a. Shut down the computer if it is in any operating system.
___b. Turn off the power supply if it is- n’t already.
___c. Open the side panel of the computer and lay the case horizontally.
___d. Unplug the CPU cooling fan’s power connector.
___e. Unclamp the cooling fan and heat sink from the CPU and set it aside, as shown in Figure 9-1.
Figure 9-1: Figure
of CPU, Fan, and
Clamp
CPU UPGRADE/OVERCLOCKING - 1
PROCEDURE - 9
___f. Release the CPU by gently sliding the lever slightly away from the socket and than rotating the lever to vertical.
___g. Gently remove the CPU being careful not to touch the pins on the bottom of the CPU. If you bend the pins the CPU will be useless. Make sure to use the Grounding Strap to remove any possible Electrostatic Discharges.
2.Reinstall CPU
___a. Refer to the CPU’s documentation to determine the Voltage, FSB, and internal frequency. The processor may have the internal frequency printed on it. Record these values in Table 9-1.
___b. Re-Insert the CPU into the Socket, as illustrated in Figure 9-2. Be careful to insert it correctly, usually 2 of the corner pins is missing in order to prevent improper connection.
Figure 9-2:
CPU in Socket
___c. Close the clamping mechanism.
___d. Clamp the cooling fan and heat sink on the processor and plug in its power connector.
3.CPU settings
___a. If you have physical jumpers on the board, refer to the motherboard’s documentation and set the FSB, Multiplier, and CPU voltage to their appropriate values and skip to step 4.
___b. Verify everything is properly connected and turn on the computer.
___c. Press Delete to enter the BIOS setup on the computer.
___d. Enter the Chipset Features Setup menu (or the menu with CPU settings).
___e. Record the values (if available) in Table 9-2.
___f. Change the values to the correct specifications of the processor.
___g. Save the values and exit.
4.CPU Overclocking
___a. Enter the BIOS setup if you have software settings for setting frequencies, or view the CPU frequency jumpers on the board without turning on the computer.
___b. Depending on which processor you can change it’s clock frequency or multiplier to attain higher performance from the processor. Try increasing the CPU multiplier slightly.
___c. Restart the computer and record the results in Table 9-3. If the computer does not start you will need to reset the CMOS.
___d. If the CPU does not generate a higher frequency turn the multiplier back to its last working setting.
2 - LAB GROUP 1
PROCEDURE - 9
___e. Another way to overclock a processor is by setting a higher BUS speed provided the chipset and memory support this speed. As before enter the BIOS setup or view the jumper settings.
___f. Increase the BUS speed slightly.
___g. Restart the computer and record the results in Table 9-4.
___h. Restore all settings to their original state.
___i. Put the case back on the computer and set it back to its original position.
TABLES
Table 9-1
Documented CPU Parameters
Voltage:
FSB:
Internal Frequency:
Table 9-2
CPU Parameters in Chipset Features Setup
CPU Speed Detected:
CPU Clock frequency:
CPU Clock Ratio:
Setup CPU Speed:
Table 9-3
Increasing CPU Multiplier – Results:
Table 9-4
Increasing BUS Speed – Results:
CPU UPGRADE/OVERCLOCKING - 3
PROCEDURE - 9
LAB QUESTIONS
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1. |
What are 2 methods of setting frequencies on various motherboards? Which is yours? |
Feedback |
2. |
How many pins appear missing to prevent improper installation. |
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3. |
What was the smallest increment used to overclock the CPU? |
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4. |
What was the name of the menu for CPU settings in your particular BIOS? (If available) |
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5. |
Is it possible to underclock a CPU? |
4 - LAB GROUP 1